JPS57138885A - Controlling device for chopper - Google Patents
Controlling device for chopperInfo
- Publication number
- JPS57138885A JPS57138885A JP2513181A JP2513181A JPS57138885A JP S57138885 A JPS57138885 A JP S57138885A JP 2513181 A JP2513181 A JP 2513181A JP 2513181 A JP2513181 A JP 2513181A JP S57138885 A JPS57138885 A JP S57138885A
- Authority
- JP
- Japan
- Prior art keywords
- chopper
- brake
- signal
- switching
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
- H02P3/14—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor by regenerative braking
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
PURPOSE:To improve the controllability of a chopper by gradually varying the ON pulse for a regeneratively braking chopper by a digital computer and smoothly switching between the regenerative brake and the regenerative brake, thereby suppressing the vibration of a filter capacitor voltage. CONSTITUTION:A timer 1 produces a trigger signal to an arithmetic controller 2 at every sampling periodic interval, an input unit 3 inputs a switching signal from regenerative brake to a generative brake or a return signal vice versa, and outputs an output to a memory 4. When an arithmetic controller 2 executes two brake mode switching or returning program by the condition information such as the switching signal or the returning signal from the memory 4, the number beta of pulses corresponding to the extincting region of a generative brake chopper BCH at the sampling period interval and the gate command are outputted to a digital phase shifter 5, and when the gate command is ''1'', the phase shift and width of an ON pulse synchronized with the chopper frequency are determined on the basis of the beta, and are outputted to the gate of the BCH via a pulse amplifier circuit 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2513181A JPS57138885A (en) | 1981-02-23 | 1981-02-23 | Controlling device for chopper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2513181A JPS57138885A (en) | 1981-02-23 | 1981-02-23 | Controlling device for chopper |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57138885A true JPS57138885A (en) | 1982-08-27 |
Family
ID=12157400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2513181A Pending JPS57138885A (en) | 1981-02-23 | 1981-02-23 | Controlling device for chopper |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57138885A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10640338B2 (en) | 2015-03-20 | 2020-05-05 | Kobelco Construction Machinery Co., Ltd. | Boom attach/detach device of crane and boom attach/detach method for crane |
-
1981
- 1981-02-23 JP JP2513181A patent/JPS57138885A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10640338B2 (en) | 2015-03-20 | 2020-05-05 | Kobelco Construction Machinery Co., Ltd. | Boom attach/detach device of crane and boom attach/detach method for crane |
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